The Idaho Humane Society offers an "extremely reduced" fee to neuter pit bulls -- much lower than
even the reduced fee for low-income families who adopt dogs.
It appears that the Humane Society has a special reason for wanting pit bulls to be neutered.
Disclosure: my fuzzy 30 pound poodle mix survived a savage attack by a pit bull. I'm not a fan.
https://www.idahohumanesociety.org/veterinary/low-cost-spay-neuter-program/
Program for Pit Bull dogs and Feral Cats
The Idaho Humane Society shelter sees both an abundance of Pit Bull type dogs being relinquished or arriving stray at the shelter and feral cats trapped from all across the Treasure Valley. The IHS Veterinary Medical Center offers extremely reduced fees on spay/neutering these specific animals. This program for Pit Bull dogs and feral cats is NOT income-qualifying; any household is eligible to participate.
Feral Cats: $10 Spay/Neuter (cats must be in a trap). Schedule a feral cat for a spay or neuter by emailing SPOTferalcats@idahohumanesociety.org.
Pit Bull Type Dogs: $25 Spay/Neuter. Schedule a pit bull type dog for a spay or neuter by emailing SPOTpitbulls@idahohumanesociety.org.